The 127 is the 580 gram tire, more TPI = less rubber= lighter.
the 60 TPI has less TPI= more rubber= more weight.
If you can get your hands on them, you can tell the difference in the suppleness of the sidewall. The 127 is more supple than the 60. the 60 has a tougher sidewall so it's more resistant to tears and cuts. IIRC the 60 is a 620 gram tire